TYPE: 获取类型大小, 对数组是获取每个元素的大小
; Test10_1.asm .386 .model flat, stdcall include windows.inc include kernel32.inc include masm32.inc include debug.inc includelib kernel32.lib includelib masm32.lib includelib debug.lib .data? v1 db ? v2 dw ? v3 dd ? v4 df ? v5 dq ? v6 dt ? v7 db 1024 dup(?) .code main proc PrintDec (type v1) ;1 PrintDec (type v2) ;2 PrintDec (type v3) ;4 PrintDec (type v4) ;6 PrintDec (type v5) ;8 PrintDec (type v6) ;10 PrintDec (type v7) ;1 ret main endp end main
$: 当前程序语句的地址
; Test10_2.asm .386 .model flat, stdcall include windows.inc include kernel32.inc include masm32.inc include debug.inc includelib kernel32.lib includelib masm32.lib includelib debug.lib .data V1 db 11,22,33,44 V1Size = ($ - V1) ;这是变量 V1 的大小 V2 dw 11,22,33,44 V2Size = $ - V2 ;这是变量 V2 的大小 V3 dd 10 dup(0) V3Size = $ - V3 ;这是变量 V3 的大小 V3Len = ($-V3) / 4 ;这是变量 V3(dword 类型数组)的元素数目 V4 db 'abcdefghijklmnopqrstuvwxyz', 0 V4Size = $ - V4 ;这是变量 V4 的大小 .code main proc PrintHex $ ;00401001, 这是当前语句的地址 PrintDec V1Size ;4 PrintDec V2Size ;8 PrintDec V3Size ;40 PrintDec V3Len ;10 PrintDec V4Size ;27 PrintHex $ ;0040135A, 这是当前语句的地址 ret main endp end main
LENGTHOF: 数组元素个数; SIZEOF: 总字节数
; Test10_3.asm .386 .model flat, stdcall include windows.inc include kernel32.inc include masm32.inc include debug.inc includelib kernel32.lib includelib masm32.lib includelib debug.lib .data v1 db 'abc', 0 v2 dd 11, 22, 33, 44, 55 v3 dd 10 dup(0) .code main proc PrintDec (lengthof v1) ;4 PrintDec (lengthof v2) ;5 PrintDec (lengthof v3) ;10 PrintDec (sizeof v1) ;4 PrintDec (sizeof v2) ;20 PrintDec (sizeof v3) ;40 ret main endp end main
TYPEDEF: 创建自定义类型
; Test10_4.asm .386 .model flat, stdcall include windows.inc include kernel32.inc include masm32.inc include debug.inc includelib kernel32.lib includelib masm32.lib includelib debug.lib ;自定义一个等同于 DWORD 的类型: Cardinal Cardinal typedef ptr dword .data val Cardinal 100 ;使用 Cardinal 定义变量 .code main proc PrintDec val ;100 ret main endp end main ;TYPEDEF 还用于定义函数原型, 如: ;MyType typedef proto :DWORD, :DWORD, :DWORD